Comparison

yACK FAST vs Bluetooth V2.1 SPP Setup

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Bluetooth V2.1 SPP Setup

Free

🔧 Utilities

No ratingsView app →

About

yACK FAST

Features

Read full description

Tool for using BlueSnap M6A wireless module, Scanfob® Brand RFID-NFC reader/writers, Scanfob® Brand BLE barcode scanners -View, and setup module parameters -Chat in STEAM mode with UART connected devices. -Show data like sensor readings, barcode/NFC/UHF scans. -Send scanner commands -Get RSSI readings from nearby BLE devices -Bluetooth Smart terminal function -Easy command history Serialio.com provides BLE app development libraries used in this app

About

Bluetooth V2.1 SPP Setup

Features

Read full description

The iOS portable devices will connect with the Bluetooth Low Energy (BLE) to serial port converter devices and exchange data with them bi-directional. The serial port includes RS-232 or RS-422 RS-485 interfaces. The user will test the APP with the SCADA, Robot, UAV, PLC, CNC or etc. with the BLE to serial port devices. The APP will be customized to meet the specific applications.

Screenshots

yACK FAST4 screens

Bluetooth V2.1 SPP Setup3 screens

Verdict

The call

The clearest difference is update cadence: Bluetooth V2.1 SPP Setup at every 2 weeks against yACK FAST's every 2 months. Bluetooth V2.1 SPP Setup also leads on iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

yACK FAST ships an update every 2 months, Bluetooth V2.1 SPP Setup every 2 weeks. The most recent releases landed on September 8, 2026 and September 18, 2026 respectively.

Scorecard2 real differences · 4 level

yACK FAST versus Bluetooth V2.1 SPP Setup: the parameters behind the verdict, then further details
Parameter	yACK FAST	Bluetooth V2.1 SPP Setup
Price	Free	Free
Update frequency	Every 2 months	Every 2 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.6	13.0 — better
Further details — not scored
Size	9 MB	18 MB
Age rating	4+	4+
Developer	Serialio Ltd.	FUH CHERNG SHEU

In-app purchases

None

yACK FAST

No in-app purchases

None

Bluetooth V2.1 SPP Setup

No in-app purchases

Questions

Is yACK FAST free?

yACK FAST is free to download, with no in-app purchases.

Is Bluetooth V2.1 SPP Setup free?

Bluetooth V2.1 SPP Setup is free to download, with no in-app purchases.

Do yACK FAST or Bluetooth V2.1 SPP Setup have ads?

Neither yACK FAST nor Bluetooth V2.1 SPP Setup shows ads.

Which is updated more often, yACK FAST or Bluetooth V2.1 SPP Setup?

yACK FAST ships an update every 2 months, and Bluetooth V2.1 SPP Setup every 2 weeks. Most recently, yACK FAST was updated on September 8, 2026 and Bluetooth V2.1 SPP Setup on September 18, 2026.